71744872960613 has 2 divisors, whose sum is σ = 71744872960614. Its totient is φ = 71744872960612.

The previous prime is 71744872960603. The next prime is 71744872960667. The reversal of 71744872960613 is 31606927844717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62244872969764 + 9499999990849 = 7889542^2 + 3082207^2 .

It is a cyclic number.

It is not a de Polignac number, because 71744872960613 - 2¹⁸ = 71744872698469 is a prime.

It is a super-2 number, since 2×71744872960613² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71744872960613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71744872960603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35872436480306 + 35872436480307.

It is an arithmetic number, because the mean of its divisors is an integer number (35872436480307).

Almost surely, 2^{71744872960613} is an apocalyptic number.

It is an amenable number.

71744872960613 is a deficient number, since it is larger than the sum of its proper divisors (1).

71744872960613 is an equidigital number, since it uses as much as digits as its factorization.

71744872960613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85349376, while the sum is 65.

The spelling of 71744872960613 in words is "seventy-one trillion, seven hundred forty-four billion, eight hundred seventy-two million, nine hundred sixty thousand, six hundred thirteen".